CN104531249A - Methane desulfurizer - Google Patents
Methane desulfurizer Download PDFInfo
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- CN104531249A CN104531249A CN201410853944.3A CN201410853944A CN104531249A CN 104531249 A CN104531249 A CN 104531249A CN 201410853944 A CN201410853944 A CN 201410853944A CN 104531249 A CN104531249 A CN 104531249A
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- Prior art keywords
- methane
- biological desulphurization
- desulphurization unit
- biogas
- hydrogen sulfide
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Treating Waste Gases (AREA)
Abstract
The invention discloses a methane desulfurizer and a preparing method of desulphurization microparticles. The device comprises a methane guiding-in pipe, a header valve arranged at the guiding-in pipe, biological desulphurization units and a methane guiding-out pipe. The number of the biological desulphurization units can be one or more. The biological desulphurization units control methane to go in and out of valves of the biological desulphurization units. The methane guiding-out pipe is arranged at a hydrogen sulfide concentration detector of the guiding-out pipe. Each biological desulphurization unit comprises an air inlet valve, an air outlet valve, an isolation net and a filling layer. The device can process methane with high-concentration sulfur, and sulfide pollution after methane burning is lowered. The preparing method of the desulphurization microparticles comprises the steps that first, active carbon particles are ground and screened; second, the active carbon particles obtained at the first step are mixed with the culture solution of thiobacillus; and third, the active carbon particles are taken out from the culture solution, excessive moisture is removed by gravity, and then the particles can be directly put into the biological desulphurization units in a filling mode to be used as the filling layers.
Description
Technical field
The present invention relates to field of Environment Protection, relate more specifically to a kind of methane-desulfurizing device.
Background technology
Biogas is more and more extensive as its application of a kind of renewable energy source, but but has concomitant problem in the production and use procedure of biogas.When biogas is from anaerobic ferment devices output, particularly when middle temperature or thermophilic fermentation, carry a large amount of hydrogen sulfide (H
2s).Owing to also having a large amount of water vapor to exist in biogas, the H in water and biogas
2s acting in conjunction, accelerates the Corrosion blockage of metallic conduit, valve and under meter.In addition, H
2the SO generated after S burning
2, be combined into sulfurous acid with the water vapour in products of combustion, make the metallic surface of equipment produce corrosion, and the pollution to atmospheric environment can be caused, affect HUMAN HEALTH.Therefore, before use biogas, H wherein must be removed
2s.Strict regulation in Environmental Protection in China standard, when utilizing biogas energy, H in biogas
2s content must not more than 20mg/m
3, be namely about 13ppm.
Biogas desulfurization method conventional at present has: dry desulfurization, wet desulphurization etc.Dry desulfurization is a kind of desulfurization method of simple and easy, efficient, relatively low cost, and it is little to be generally suitable for methane quantity, the biogas desulfurization that concentration of hydrogen sulfide is low.Hydrogen sulfide (H in dry removal biogas
2s) equipment ultimate principle uses O
2by H
2s is oxidized to a kind of method of sulphur or oxysulfide, also can be described as dry type oxidation process.The formation of dry method equipment is, in a container, put into filler, packing layer has gac, ferric oxide etc.Gas with low flow velocity from one end in container packing layer, hydrogen sulfide (H
2s) after being oxidized to sulphur or oxysulfide, remain in packing layer, after purification, the gas from vessel the other end is discharged.Its shortcoming is that desulfuration efficiency is lower, and equipment is huge, investment is large, floor space is large, and operative technique requires high.
Wet desulphurization can be concluded and is divided into physical absorption method, chemical absorption method and oxidation style three kinds.There is hydrogen sulfide reprocessing problem in physics and chemistry side's absorption process, oxidation style take basic solution as absorption agent, and to add oxygen carrier be catalyzer, absorbs H
2s, and be oxidized to elemental sulfur.Wet oxidation method is that sweetening agent is dissolved in water, and liquid access arrangement, mixes with biogas, and the hydrogen sulfide in biogas and liquid produce oxidizing reaction, and the liquid generating elemental sulfur absorbing hydrogen sulphide has sodium hydroxide, calcium hydroxide, sodium carbonate, ferrous sulfate etc.There is waste water handling problem in wet process of FGD, initial cost is large, and working cost is also higher.
In order to solve problems of the prior art, we have developed desulfurizer as herein described, and it uses sulfide-oxidizing enzyme to process the hydrogen sulfide in biogas in half-dried environment, and can be designed to parallel-connection structure, thus can continual process be carried out, the impact do not safeguarded and clean.
Summary of the invention
The invention discloses a kind of methane-desulfurizing device, it comprises with lower part: biogas ingress pipe, be arranged on the total valve of ingress pipe, biological desulphurization unit, the quantity of biological desulphurization unit can be one or more, control intake valve and air outlet valve that biogas entered and left biological desulphurization unit, biogas delivery line, is arranged on the concentration of hydrogen sulfide detector of described delivery line; Wherein said biological desulphurization unit comprises separation net and packing layer.
In some embodiments of the present invention, methane-desulfurizing device can have the branch road of two or more parallel connections, and the quantity of the biological desulphurization unit wherein on each branch road is for being more than or equal to 1.
In some embodiments of the present invention, concentration of hydrogen sulfide detector can be set after the air outlet valve of each branch road; If each branch road only has a biological desulphurization unit, then mean has a concentration of hydrogen sulfide detector after the air outlet valve of each biological desulphurization unit.
In biological desulphurization unit of the present invention, packing layer is by desulfurization microparticle, and described desulfurization microparticle take activated carbon as core, adsorbs the nutrient solution of Containing Sulfur bacterium in surface and hole.The physisorption of gac accelerates the absorption to hydrogen sulfide, and sulfide-oxidizing enzyme is then oxidized hydrogen sulfide, generates sulfate ion.
The making method of desulfurization microparticle, it comprises: the first step, activated carbon granule grinding is sieved; Second step, the activated carbon granule the first step obtained mixes with the nutrient solution of sulfide-oxidizing enzyme; 3rd, from described nutrient solution, described activated carbon granule is pulled out, rely on gravity to remove excessive moisture, directly can be loaded in biological desulphurization unit afterwards and serve as packing layer.
Desulfurization microparticle of the present invention can be recycled, when the concentration of hydrogen sulfide that concentration of hydrogen sulfide detector after air outlet valve detects exceedes target value, close the intake valve of place branch road, the biological desulphurization unit disassembling of place branch road is got off, uncap, desulfurization microparticle is wherein imported in scavenging solution and washs, remove the various meta-bolitess that surperficial nutrient solution and sulfide-oxidizing enzyme and sulfide-oxidizing enzyme chemoautotrophy produce, the gac core obtained is cleaned again after drying, the making of desulfurization microparticle can be reused for.
Desulfurizer of the present invention uses desulfurization microparticle, considerably increases the contact area of unit volume, thus improves reaction efficiency, reduce the volume of desulfurizer.
The beneficial effect of methane-desulfurizing device of the present invention is:
A) adopt desulfurization microparticle, substantially reduce the volume of desulfurizer.
B) parallel branch is adopted to relate to, can uninterrupted duty, by the impact changing biological desulphurization unit.
C) high-level efficiency, hydrogen sulfide removal rate is up to 98.5%.
D) high subject range, can select the number of the desulfurization unit of series connection, so can process very high hydrogen sulfide according to concentration of hydrogen sulfide.
Accompanying drawing explanation
Accompanying drawing of the present invention is only that signal is illustrative, is not real scale.
Fig. 1 is the schematic diagram of one embodiment of the invention, and it has two branch roads, each branch road has a biological desulphurization unit.
Fig. 2 is the schematic diagram of one of two branch roads of another embodiment of the invention, and namely each branch road has two biological desulphurization unit.Air outlet valve and concentration of hydrogen sulfide survey meter is also had after each biological desulphurization unit.
Fig. 3 is the sectional view of biological desulphurization unit of the present invention, and illustration is the partial enlarged drawing of packing layer.Wherein 1 is upper cover, and 2 is separation net, and 3 is body, and 4 is packing layer.Right part is the partial approach figure of packing layer.
Embodiment
Describe the present invention in detail below with reference to accompanying drawing, but it will be understood by those of skill in the art that these examples only for illustrating, but not limit the scope of the invention.
Fig. 1 shows the methane-desulfurizing device with two branch roads.F0 is the main valve on ingress pipe, is used for opening or close biogas and enters methane-desulfurizing device.On branch road A, then main valve (F0) is followed successively by the inlet pipe at intake valve (Fa1) and place thereof, biological desulphurization unit A1, the escape pipe at air outlet valve (Fa2) and place thereof, concentration of hydrogen sulfide survey meter (Ca).On branch road B, then main valve (F0) is followed successively by the inlet pipe at intake valve (Fb1) and place thereof, biological desulphurization unit B 1, the escape pipe at air outlet valve (Fb2) and place thereof, concentration of hydrogen sulfide survey meter (Cb).In order to prevent the corrosion of hydrogen sulfide, the various pipeline in the present invention and container preferably use the plastics of fusing point highly corrosion resistant to make.Described hydrogen sulfide survey meter is FIX550-H2S (Wan An, Shenzhen enlightening Science and Technology Ltd.).
The use of methane-desulfurizing device of the present invention.The biogas produced from methane-generating pit or other fermentation units is introduced methane-desulfurizing device by ingress pipe, opens intake valve Fa1, Fb1, air outlet valve Fa2, Fb2, observe the reading of concentration of hydrogen sulfide survey meter Ca and Cb.Branch road A and B can open simultaneously or open respectively and detect.If the reading of the concentration of hydrogen sulfide survey meter of certain certain branch road has exceeded national standard 20mg/m in use for some time
3, then the intake valve of place branch road and air outlet valve are closed, the biological desulphurization unit more renewed.
The concentration conversion formula of hydrogen sulfide is: the quality=1.539mg/m of 1ppm hydrogen sulfide
3.
Use the system containing single biological desulphurization unit to test containing the biogas of different concns hydrogen sulfide, the solubility row in inlet tube in the concentration of hydrogen sulfide of biogas and fairlead in table 1 below.
Table 1: the experimental result that hydrogen sulfide is removed
As can be seen from Table 1, methane-desulfurizing device of the present invention serves good desulfidation to biogas, and the scope of desulfurization is comparatively large, can be from 0 to about 15000mg/m to hydrogen sulfide content
3biogas process.The results contrast of process is desirable, and except the concentration of no to scale, result all meets national standard.For more than 15000mg/m
3concentration, can use series connection two or more biological desulphurization unit branch structure process, the experimental result according to table 1 can be thought, the process upper limit of single biological desulphurization unit is about 15000mg/m
3, often increase a biological desulphurization unit, the process upper limit can increase about 15000mg/m
3(being as the criterion with actual detected value).
As shown in Figure 2, a branch road of the present invention there is continuously the structure of two biological desulphurization unit.
Fig. 3 is the sectional view of the biological desulphurization unit of biological desulphurization unit of the present invention.Wherein 1 is upper cover, can open for changing desulfurization microparticle, and 2 is separation net, for supporting desulfurization microparticle and through biogas.3 is body, for holding separation net, desulfurization microparticle and biogas, and forms airtight volume with upper cover, is carried out the turnover of biogas by the pipeline of fixture body and upper cover.
The making of nanometer microparticle.Commercially available gac is ground, crosses 16 mesh sieves, in the nutrient solution of the Containing Sulfur bacterium that the particle by sieve is added.Can containing sulfide-oxidizing enzyme in one or more in the nutrient solution of Containing Sulfur bacterium, as long as they can coexist, such as thiobacillus thiooxidans (T.Thiooxidans), grate sulfur thiobacillus (T.thioparus), thiobacillus ferrooxidant (T.ferrooxidans), thiobacillus denitrificans (T.denitrificans) etc., preferential oxidation sulphur thiobacillus.After the nutrient solution that activated carbon granule adsorbs enough Containing Sulfur bacteriums, it is pulled out from cultivation, after waiting for that unnecessary nutrient solution removes by gravity, namely no longer drip after nutrient solution, be namely successfully prepared.Then can load biological desulphurization unit can use.
The above the specific embodiment of the present invention, does not form limiting the scope of the present invention.Various other that any technical conceive according to the present invention is made change and distortion accordingly, all should be included in the protection domain of the claims in the present invention.
Claims (6)
1. a methane-desulfurizing device, it comprises with lower part: biogas ingress pipe, be arranged on the total valve of ingress pipe, biological desulphurization unit, the quantity of biological desulphurization unit can be one or more, control the valve that biogas entered and left biological desulphurization unit, biogas delivery line, is arranged on the concentration of hydrogen sulfide detector of described delivery line.
2. methane-desulfurizing device according to claim 1, wherein said biological desulphurization unit comprises intake valve, air outlet valve, separation net and packing layer.
3. methane-desulfurizing device according to claim 1, wherein said more biological desulphurization unit can be arranged by serial or parallel connection.
4. methane-desulfurizing device according to claim 1, after wherein said concentration of hydrogen sulfide detector can be arranged on the air outlet valve of each biological desulphurization unit.
5. methane-desulfurizing device according to claim 2, wherein said packing layer is made up of desulfurization microparticle.
6. the making method of desulfurization microparticle, it comprises: the first step, activated carbon granule grinding is sieved; Second step, the activated carbon granule the first step obtained mixes with the nutrient solution of sulfide-oxidizing enzyme; 3rd, from described nutrient solution, described activated carbon granule is pulled out, rely on gravity to remove excessive moisture, directly can be loaded in biological desulphurization unit afterwards and serve as packing layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410853944.3A CN104531249A (en) | 2014-12-31 | 2014-12-31 | Methane desulfurizer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410853944.3A CN104531249A (en) | 2014-12-31 | 2014-12-31 | Methane desulfurizer |
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| CN104531249A true CN104531249A (en) | 2015-04-22 |
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ID=52846886
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116943406A (en) * | 2023-07-13 | 2023-10-27 | 广东中南钢铁股份有限公司 | Online replacement method and system for desulfurizing agent of flue gas purification system |
Citations (7)
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|---|---|---|---|---|
| ES2129351B1 (en) * | 1997-02-07 | 2000-04-01 | Univ Cadiz | AUTOMATED SYSTEM FOR THE ELIMINATION OF SULFHIDRIDO FROM BIOGAS PRODUCED IN WASTEWATER PLANTS, WITH BIOLOGICAL DELIVERY RECOVERY. |
| CN102021055A (en) * | 2009-09-10 | 2011-04-20 | 农业部沼气科学研究所 | Anaerobic biological desulfurization method and device for methane |
| CN102580521A (en) * | 2012-03-26 | 2012-07-18 | 湖南农业大学 | Method for removing hydrogen sulfide gas by utilizing biological active carbon fiber |
| CN103084059A (en) * | 2011-11-08 | 2013-05-08 | 财团法人交大思源基金会 | Biological compounds and methods for reducing hydrogen sulfide |
| CN103146760A (en) * | 2013-03-18 | 2013-06-12 | 张其标 | High-efficiency, energy-saving and environment-friendly technology for fermentation and purification of biogas |
| CN103272477A (en) * | 2013-05-29 | 2013-09-04 | 中国科学院生态环境研究中心 | Compound microbial active filling material for removing sulphur-containing repugnant substances, as well as preparation and application thereof |
| CN204455034U (en) * | 2014-12-31 | 2015-07-08 | 山东圣琪生物有限公司 | Methane-desulfurizing device |
-
2014
- 2014-12-31 CN CN201410853944.3A patent/CN104531249A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2129351B1 (en) * | 1997-02-07 | 2000-04-01 | Univ Cadiz | AUTOMATED SYSTEM FOR THE ELIMINATION OF SULFHIDRIDO FROM BIOGAS PRODUCED IN WASTEWATER PLANTS, WITH BIOLOGICAL DELIVERY RECOVERY. |
| CN102021055A (en) * | 2009-09-10 | 2011-04-20 | 农业部沼气科学研究所 | Anaerobic biological desulfurization method and device for methane |
| CN103084059A (en) * | 2011-11-08 | 2013-05-08 | 财团法人交大思源基金会 | Biological compounds and methods for reducing hydrogen sulfide |
| CN102580521A (en) * | 2012-03-26 | 2012-07-18 | 湖南农业大学 | Method for removing hydrogen sulfide gas by utilizing biological active carbon fiber |
| CN103146760A (en) * | 2013-03-18 | 2013-06-12 | 张其标 | High-efficiency, energy-saving and environment-friendly technology for fermentation and purification of biogas |
| CN103272477A (en) * | 2013-05-29 | 2013-09-04 | 中国科学院生态环境研究中心 | Compound microbial active filling material for removing sulphur-containing repugnant substances, as well as preparation and application thereof |
| CN204455034U (en) * | 2014-12-31 | 2015-07-08 | 山东圣琪生物有限公司 | Methane-desulfurizing device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116943406A (en) * | 2023-07-13 | 2023-10-27 | 广东中南钢铁股份有限公司 | Online replacement method and system for desulfurizing agent of flue gas purification system |
| CN116943406B (en) * | 2023-07-13 | 2024-07-09 | 广东中南钢铁股份有限公司 | Online replacement method and system for desulfurizing agent of flue gas purification system |
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Application publication date: 20150422 |
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